The main goal of thesis proposal is to evaluate the impact of energy sectors (coke-refined petroleum, electricity-gas) on the creation of gross domestic product, employment and wages for the Hellenic economy. The main quire that we try to answer is to find out the real effect-footprint of energy sectors on product, employment and wages creation for Hellenic economy. We use as main empirical framework the Input-Output one as it has been presented by Leontief. Main tool for this framework is the input – output tables which describe totally the economic network. Country economic network describe by two sides-dimensions under this framework. Firstly, by the side of demand per economic sector which operates as a buyer for outputs of others sectors product in order to produce its product. Secondly by the side of supply per economic sector which operates as a purchaser in order to satisfy others sectors demand for its final product. The above mentioned double-dimensions analysis makes easy to investigate the core-basic relationships between economic sectors which built a national economy. Especially for the need of present thesis has been used the hypothetical extraction method of Dietzenbacher and van der Linden (1997). This specific method based on extraction method, in other words the effect that will be produced by the extraction of a sector by the side of seller or by the side of purchaser. This analysis will present the total effect for national product, employment and wages after energy sectors extraction. Moreover, we will present top-10 sectors with largest incretion on national product, employment and wages after extraction of energy sectors. Additionally, we will calculate dependence of the results by imports in order to find out ability of Hellenic economy to be reproduced itself. We use data for thesis by the official IO database of Input Output International Association (IOIA).